Initial support for mixins in dartc.

editor/tools/plugins/com.google.dart.tools.core_test/src/com/google/dart/tools/core/utilities/ast/DartElementLocatorTest.java

Index: editor/tools/plugins/com.google.dart.tools.core_test/src/com/google/dart/tools/core/utilities/ast/DartElementLocatorTest.java
diff --git a/editor/tools/plugins/com.google.dart.tools.core_test/src/com/google/dart/tools/core/utilities/ast/DartElementLocatorTest.java b/editor/tools/plugins/com.google.dart.tools.core_test/src/com/google/dart/tools/core/utilities/ast/DartElementLocatorTest.java
index 3b5ed0b22376bbb275c260e38bdbc110d43453ea..eb6c8a208e5d58ab6eb757bd3eed681b64dcf374 100644
--- a/editor/tools/plugins/com.google.dart.tools.core_test/src/com/google/dart/tools/core/utilities/ast/DartElementLocatorTest.java
+++ b/editor/tools/plugins/com.google.dart.tools.core_test/src/com/google/dart/tools/core/utilities/ast/DartElementLocatorTest.java
@@ -18,6 +18,7 @@ import com.google.common.collect.Lists;
 import com.google.dart.compiler.DartCompilationError;
 import com.google.dart.compiler.ast.DartUnit;
 import com.google.dart.tools.core.model.CompilationUnit;
+import com.google.dart.tools.core.model.DartClassTypeAlias;
 import com.google.dart.tools.core.model.DartElement;
 import com.google.dart.tools.core.model.DartFunction;
 import com.google.dart.tools.core.model.DartImport;
@@ -97,6 +98,19 @@ public class DartElementLocatorTest extends TestCase {
     }
   }
 
+  public void test_ClassTypeAlias_topLevel() throws Exception {
+    testElementLocator(
+        formatLines(
+            "// filler filler filler filler filler filler filler filler filler filler filler",
+            "class A {}",
+            "typedef B = Object with A;",
+            "foo(B b) {}"),
+        "B b)",
+        DartClassTypeAlias.class,
+        "B = Object",
+        1);
+  }
+
   public void test_DartFunction_onReference() throws Exception {
     testElementLocator(
         formatLines(